Improve scale's design
Improve scale's design

Center the text
Make ticks centered
Move drawing code to update as the size will be updated

Distrotech/libchamplain,potyl/champlain,GNOME/perl-Champlain,PabloCastellano/libchamplain,GNOME/libchamplain,GNOME/libchamplain,potyl/champlain,StanciuMarius/Libchamplain-map-wrapping,StanciuMarius/Libchamplain-map-wrapping,Distrotech/libchamplain,Distrotech/libchamplain,Distrotech/libchamplain,GNOME/perl-Champlain,GNOME/perl-Gtk2-Champlain,StanciuMarius/Libchamplain-map-wrapping,StanciuMarius/Libchamplain-map-wrapping,PabloCastellano/libchamplain,GNOME/perl-Gtk2-Champlain,potyl/champlain,Distrotech/libchamplain,PabloCastellano/libchamplain,StanciuMarius/Libchamplain-map-wrapping,potyl/champlain,PabloCastellano/libchamplain,PabloCastellano/libchamplain